期刊
ELECTROCHIMICA ACTA
卷 46, 期 13-14, 页码 2085-2090出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0013-4686(01)00410-8
关键词
electrochromism; mixed oxides; optical characterization; sputtering deposition
Vanadium pentoxide has been the subject of many works owing to its capacity to host large amounts of lithium. Many studies where V2O5 has been mixed with different transparent oxides, such as CeO2, ZrO2, TiO2, have been performed in order to preserve the ion-storage capacity and compensate the unwanted multicolor cathodic electrochromism. In the present work, we report on the optical properties of cerium and vanadium mixed oxides obtained by radio frequency sputtering in reactive Ar + O-2 atmosphere. Since the electrochromic properties of thin films strongly depend on the oxidation slate of the transition metal in the oxide, the role of oxygen partial pressure during the deposition is of fundamental importance. A set of samples was deposited by decreasing the oxygen partial pressure in the chamber from 1/6 to 1/1000 of the total pressure and their optical properties were compared to those of the samples deposited in pure argon. The majority of deposited films changes coloration from yellowish to transparent upon lithium insertion, showing an anodic-like electrochromic behavior. Optical constants (refractive index and extinction coefficient) and film thickness were evaluated in the visible range from photometric measurements of both as-deposited and intercalated films. (C) 2001 Elsevier Science Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据